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arXiv 2001.01540physics.ins-dethep-ex
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GridPix四通道探测器的性能

Performance of the GridPix detector quad

Cornelis Ligtenberg, Yevgen Bilevych, Klaus Desch, Harry van der Graaf, Markus Gruber, Fred Hartjes, Kevin Heijhoff, Jochen Kaminski, Peter M. Kluit, Naomi van … 展开作者

Cornelis Ligtenberg, Yevgen Bilevych, Klaus Desch, Harry van der Graaf, Markus Gruber, Fred Hartjes, Kevin Heijhoff, Jochen Kaminski, Peter M. Kluit, Naomi van der Kolk, Gerhard Raven, Tobias Schiffer, Jan Timmermans

备注：
To be published in Nuclear Instruments and Methods in Physics Research Section A
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摘要：

气体像素读出模块与四个GridPix芯片，称为四，已被开发为一个大的时间投影室读出平面的构建块。四模块的尺寸为39.6 mm $\times$ 28.38 mm，有效表面覆盖率为68.9%。GridPix芯片由一个Timepix 3芯片组成，集成了放大网格，具有高效率检测单个电离电子，从而能够进行精确的轨道位置测量。一个四模块被安装在一个小的时间投影室和测量2.5 GeV的电子进行了ELSA加速器在波恩，在那里的硅望远镜被用来提供一个参考轨道。在像素平面和漂移方向上的轨道位置测量的误差由扩散支配。四边形被设计成具有最小的电场不均匀性和失真，在像素平面中实现优于13 $μ$ m的系统性。该装置的分辨率为41 $μ$ m，其中四元检波器的总系统误差为24 $μ$ m。

英文摘要：

A gaseous pixel readout module with four GridPix chips, called the quad, has been developed as a building block for a large time projection chamber readout plane. The quad module has dimensions 39.6 mm $\times$ 28.38 mm and an active surface coverage of 68.9%. The GridPix chip consists of a Timepix3 chip with integrated amplification grid and have a high efficiency to detect single ionisation electrons, which enable to make a precise track position measurement. A quad module was installed in a small time projection chamber and measurements of 2.5 GeV electrons were performed at the ELSA accelerator in Bonn, where a silicon telescope was used to provide a reference track. The error on the track position measurement, both in the pixel plane and drift direction, is dominated by diffusion. The quad was designed to have minimum electrical field inhomogeneities and distortions, achieving systematics of better than 13 $μ$m in the pixel plane. The resolution of the setup is 41 $μ$m, where the total systematic error of the quad detector is 24 $μ$m.

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